Sowore announced this in a Facebook post on Saturday, adding that the Divisional Police Officer of Okada Police Station confirmed the death to his family.
The activist said his brother was killed by suspected herdsmen operating as kidnappers.
The deceased is said to be in his late 40s.
According to him, the deceased was killed on his way from Igbinedion University in Edo State.
The police had yet to officially react to the student’s death as of the time of filing this report.
Sowore posted, “My immediate younger brother, Olajide Sowore was today shot and killed near Okada in Edo state by reportedly herdsmen/kidnappers on his way from Igbinedion University in Edo State where he is studying Pharmacy.
“I travelled widely with you and our father as a little kid. You were the most loved robust kid I ever first knew. You, Mr. magnet had no enemy!
“You, Mr. Sunshine Foundation who made everyone happy.
“You, the boy who snuck out his older ones to parties, taking all the blames when our disciplinarian father found out.
“You, the guy who was an out-of-the-box thinker who decided school wasn’t for you and created your own genre of music and then turned around to go to school after you almost turned 50!
“You lived your life so that everyone could be alright but now assassinated by everything that’s not alright! Saddest day yet!”